Other selections are available for handguards, flash hiders, gas blocks and barrel customizations. Please choose from the options available

NOTE: F-Marked Front Sight Base is not compatible with an A2 Upper due to height compatibility, therefore if you choose an A2 Upper and want a standard front sight base you need to choose the Standard A2 Front Sight Base.

Warning! Always have a competent gunsmith assemble your barrel kit and headspace your barrel before first use. Using a rifle put together incorrectly or assembled using incorrect or modified parts can result in a damaged rifle, personal injury, death, or damage to property.